Both thin and medium thick materials are suitable; Used for buttonhole sewing of various knitted, cotton spun, synthetic and other fabrics; Can sew flat and triangular stitches, with firm and beautiful stitches; High sewing speed, adjustable buttonhole length, width, and number of needles; Equipped with an automatic lubrication system and automatic thread cutting device, YG782K is dedicated to various knitted garments, while YG783NV is dedicated to various woolen sweaters.